refactor: use fs:: over boost::filesystem::

src/logging.cpp

@@ -245,7 +245,7 @@ void BCLog::Logger::ShrinkDebugFile()
     size_t log_size = 0;
     try {
         log_size = fs::file_size(m_file_path);
-    } catch (boost::filesystem::filesystem_error &) {}
+    } catch (const fs::filesystem_error&) {}
 
     // If debug.log file is more than 10% bigger the RECENT_DEBUG_HISTORY_SIZE
     // trim it down by saving only the last RECENT_DEBUG_HISTORY_SIZE bytes

src/qt/guiutil.cpp

@@ -368,10 +368,10 @@ void openDebugLogfile()
 
 bool openBitcoinConf()
 {
-    boost::filesystem::path pathConfig = GetConfigFile(gArgs.GetArg("-conf", BITCOIN_CONF_FILENAME));
+    fs::path pathConfig = GetConfigFile(gArgs.GetArg("-conf", BITCOIN_CONF_FILENAME));
 
     /* Create the file */
-    boost::filesystem::ofstream configFile(pathConfig, std::ios_base::app);
+    fs::ofstream configFile(pathConfig, std::ios_base::app);
 
     if (!configFile.good())
         return false;

src/wallet/rpcdump.cpp

@@ -706,15 +706,15 @@ UniValue dumpwallet(const JSONRPCRequest& request)
 
     EnsureWalletIsUnlocked(pwallet);
 
-    boost::filesystem::path filepath = request.params[0].get_str();
-    filepath = boost::filesystem::absolute(filepath);
+    fs::path filepath = request.params[0].get_str();
+    filepath = fs::absolute(filepath);
 
     /* Prevent arbitrary files from being overwritten. There have been reports
      * that users have overwritten wallet files this way:
      * https://github.com/bitcoin/bitcoin/issues/9934
      * It may also avoid other security issues.
      */
-    if (boost::filesystem::exists(filepath)) {
+    if (fs::exists(filepath)) {
         throw JSONRPCError(RPC_INVALID_PARAMETER, filepath.string() + " already exists. If you are sure this is what you want, move it out of the way first");
     }